Engine.



H. P. T. VAN KEUREN.

ENGINE.

APPLICATION HLED AUG. 18, I913.

1,225,376. Phtented May 8,1917.

3 SHEETS-SHEET 1.

INVENTOR H. P. T. VAN KEUREN.

ENGINE.

APPLICATION mu) Aue,1s.|9i3.

1,225,376 Patented. May 8, 1917 3 SHEETSSHEET 3.

INVENTOR ATTORNEY i HENRY P. T. VAN REUBEN, OFPHILADELPHIA.PENNSYLVANIA.

r ENGINE.

Specification of Le ttel's Patent.

Patented May 81. 1917.

' A ipltcation filed August 18, 1913. Serial No. 785.267.

To 11/! Ir/m/n 1'! may; rum-er:

15o it known that l. lllcxnv l; 'l. VAN

Km iii-1N. a citizen of the l'nited States. re

siding at lhiladtlphia. in the count ot' Phihulelphia; State ofIeluisylvaiua. have 'invented a new and useful l1'ngiue.ot' which Myinvent ion also comprises ilnprovtnnent's in cooling methods. incylinders and n1 water jackets. improved gas distributing means andlIIIPPOVPHItHttS in lubrication and in other details of construction.

Referring to the dra wings:

Figure l is a vertical longitudinal midsection of a tour o vl .ier. fourcycle, 'ater cooled gasolene automobile engines.

Fig. 2 is a transverse vertieal section of same on line 22 ot Fig. 1.

Fig. 3 isa transverse vertical section of a modified form of engine.

Fig. 4 is a perspective view of a flexible collar or spring ringinserted hetween crank case and cylinder in the construction shown inFig.3.

. Fig. 5 is a horizontal longitudinal section of a oasing through thecenter line of tlnt \nllve hg i'eof a further lnmlilioation;

Fig: 6 is a similar vicw'ot an additional modification.

Fig. 7 is a plan view of a hatlle plate which may he emp oyed in theintake ehaniher ot' the engines shown in Figs. 2 and 3.

Fig. 8 is a side view of same.

.Fig. 8 is an end view of same.

Fig. 9 is a top view of cylinder showing a circular port.

Similar numerals refer to similar parts throughout the several views.

3111 the constructions shown in the draw ings, whichare.illustrativemerely h v way ofpxample, of preferred einhodinients ol'ln v invention. the cylinders are served h v rotating valve ll. Thisvalve is in the l'orn of a hollow c vlinlle' and is provided atintervals. hoth longitudinally and peripherally. with recesses 12forming passage- \va vs tor the l'lesh and p'entgases.

In the construction shown in Figs. l alul cylinders 10 are mere shellsof metal made as thin as is consistent with neeessar v strength towithstandthe gas pressures and the handling and methods ol"niainll'aeture. The are made thin in order to give up oi readilytransfer heatto the water jacket. to the incoming charge and to theexhaust. as well as for the purpose of securing lightness.

Said e vlinders 10 are ground internally to the proper bore of theengine and externally to lit with a slight clearance the ground hores lof easing or. water jacket castiug'll.

(asing H for ease and eheapness of'niauu- I facture and for the sakeol', rigidity is preterahle east 1'. blue.

(asing H- is provided with a horizontal longitudinal bore 15 in whichthe valve It operates. llores l3 \vhieh rcceivethe cylinders ltlintersect hore 15 which receives the valve in the proeess of forminghores 131 an end will is used which lnaehiln-s upper lips I and ll ofexhaust port l8 and intake port; 1!) leading to exhaust chauiher 2t) andl'ronl intake ehanlher 2t. 'lhe lower lips ol' said ports are formedupon the (Xlllltltl' heads which are provided with c vliudrieal hearingsurt'aecs or valve seats 2; pierced by cylinder ports 2 r I 'll v thisconstruction vli'nde.r pressures cause the cylinders to move upward aminute distance to a seat upon the rotating valve ll. insuring gastightness.

lnitial adjustment of the cylinders upon the valve in the form shown inl i I and .2 is secured h v set serews 2t whleh hear against spark plug25 on the one side and re liel' cock plug 20 on the other side. llugs 3and .Zt'r are screwed into proper threaded recesses in cylinders 10 andhence luade. rigid therewith.

\Vater jaoket. 2.7 surrounds the cylinders, valve 11 and the iutakeandexhaust; chain hers ll and 30. serving not: alone to cool the vlindersand the valve externally but also to raise the temperature of the intakegas and lower that. of tho exhaust. This feature provides improvedcarburation. There is also a direct transfer of heat through thecylinder heads since they form portions of the walls of both intake andexhaust chambers. I The set screws 24 bear against plugs 25 and 26threaded into cylinders 10 near the point of bearing between thecylinders and valve. It will thus be seen that changes of length ofthecylinders due to expansion wil be effective over a short distanceonly so far. as affects .the adjustment between cylinders and valve, andthe cylinders will not be caused to bind upon the valve.

For ease of casting in the foundry both intake and exhaust chambers 21and 20, in the constructions. shown in Figs. 1, 2 and 3, are shown asextendin along the length of all the cylinders with but one inlet forthe intake and one outlet for the exhaust. In such construction, in.order that the cylinders "may all receive a more nearly uniform charge,a bafile plate 28 may be employed within the intake as shown in Fig. 2.

; his bafllep'late28is shown in detail in Figs. 7, 8 and 8. It is formedfrom sheet .metal and comprises the oppositely disposed deflectors 28held in position by bolt 65 and flange 29 which also forms a gasketbetween intake pipe 30 and casing 14.

The valve 11 is preferably internally cooledby water constantly passingthrough it. The water passes through pipe 31 at the .rear of the engine,thence to valve 11 and out at its front end through'branch 32 of mainwater jacketoutlet pipe and on to the radiator, not shown. Vater entersthe main water jacket by means of pipes-34.

Since the valve is constantly rotating and its inlet and outlet ipes arestationary I provide the packed oints 35 at the front and rear ends ofthe valve. Pipes 31 and 32 have a close fit within the ends of valve 11and are provided respectively with flanges 66 and 67 between which andthe ends of the valve the acking is inter posed. Pipes 31 and 32 are aso provided with annular shoulders '68 and 69 adapted to receive theends of threaded rod 36 which extends longitudinally through valve 11and is provided with the nuts 37. It will be apparent that by turningnuts 37 upon rod 36 the pipes 31 and 32 may be slightly moved toward thevalve and the packet joints maintained as tight as may be required.

The rotating valve is oiled by means of a forced feed or mechanicaloiler 38 which is driven from piilley 39 on the valve by means oflbelt46. Oil leads 41 conduct the oil under pressure through oil ducts 42 tothe valve at several oints along which it may be distributed liy herringbone oil grooves cut in its periphery.

A;,-Lsil e nt chain 43 may be employed to obvious that other positivemeans of valve drive may be employed such as bevel, spiral or wormgearing. The chain is inclosed in casing 49 and is lubricated :by oilsplash- 1 ing through the open end of crank case 50.

In addition to the advanta es above referred to as arising from the t incylindersand bloc casing construction, it will be noted that theconstruction is important because of its extreme simplicity and ease andcheapness of manufacture.- By carrying the water jacket down to the baseof the cylinders and placing the cylinder stud nuts inside the crankcase all unnecessary lines are removed from the casing. At the sametime, this added length of jacket over that which is commonly used isalso of importance where the thermo-siphon method of cooling isemployed, in that it allows more freedom for convection currents to beset up in the body of cooling water and thus improves the circulation.

' By the employmentof circular cylinder the same through casing 14 tothe crank case 50 by means of cylinder studs 51.

In the construction shown in Fig. 3, cylinder 70 is integral with waterjacket casing valve receives, from the cyl- 52 and fits in ground joint53 in the up er casting 54 which contains intake cham er 21, exhaustchamber 20, valve 11, etc, as shown in' Fig. 2. Casting 54 is secured tocrank case 56 by means" of bolts 57 which secure it tightly to a seat 58upon supporting portions 55 of crank case Bolts 57 also pass downthrough the crank case and form the main bearing bolts. They aredesigned to take up the entire cylinder re actions.

The cylinder 70 also has a close fit, at its lower end, within thecollar 62 held in place by studs 63. This collar serves to flexible ring64.

This ring 64 is interposed between the lower end of the cylinder and thecrank case and serves to hold the cylinder to its seat upon the valve.It is provided, on op osite sides, with the slight projections 71 aapted to bear against the lower end of cylinder izs and the slightprojections 72 adapted to bear against thecrank case.

Cooling water passes into the cylinder jackets at 51 through thepassages 60 in ground joint 53. around intake and exhaust chambers 21and 20 and valve 11. and out at 61.

The construction shown in Fig. 3 is especially adapted for a slow speed.heavy duty marine engine in which class of engine the pressures ensuingfrom the large bore cylinders are very heavy.

In Fig. 5 there is shown a construction ofthe casing 14" wherein ballle28 is omitted 15 and the intake and exhaust chambers :21 and are commonto a pair of cylinders 10" only, or are siamesed. v

In Fig. 6 there is shown still another construction of the casingwherein intake and 20 exhaust chambers 21" and 20' are all separate percylinder. The field of this a r angeinent would be where greatest powerfor a given bore and stroke is desired and highest speeds employed, asin racing engines.

25 The valve is externally cooled more elliciently in this type.

\Vhat I claim. is

1. in an engine. the combination of a stationary housing. a cylindermovably seatd therein. a piston operating in the cylinder. a rotatablevalve member journaled in the housing and operating in a concave valveseat in the lieailot' the cylinde' and positively adjustable means atthe cylinder head for maintaining. the relative position between thecylinder and the housing.

In an engine. the combination of a. stationaryhousing. a cylindermovably seated therein, a piston operating in the cylinder,

. lindrical recesses. cylinders movably fitted 40 a rotatable valvemember journaled in the housing and operating in a concave valve seat inthe head of the cylinder and means at the cylinder head for limiting therelative movement between the cylinder and the housing.

3. .In an engine,.tlie coi'nbination of a stationary housing. a cylindermovably seated therein, a piston operating in the cylinder,

a rotatable valve member journaled iii the housing and operating in aconcave valve I sent in the head of the cylinder and means at thecylinder head for limiting the relative movement between the cylinderand the valve.

. 4. In an engine. the combination of a stationary housing. a cylindermovably seated therein, a. piston operating in the cylinder, a rotatablevalve member jouriialed in the housing and operating in a concave valvebeatiin the head of.thccylinder, and adjustable means a't the cylinderhead-for maintaining the relative position Between the cylinder and thehousing.

In an engine. the combination of a stationary housing, a cylindermovably seated therein. a piston operating in the cylinder, a rotatablevalve member journaled in the housing and operating in a concave valveseat in the head of the cylinder and positively adjustable means at thecylinder head for maintaining the relative position be-' tween thecylinde and the housing, whereby the pressure of the expanding charge inthe cylinder is utilized to make effective the fit between the valve andits seat.

6. In an engine. the combination of a Stittionary housing. a cylindermovably seated therein. a piston operating in'the cylinder,

a rotatable valve member journaled in the housing and operating in aconcave valve seat in the head of the cylinder. and exsupply chambersfoinied in the housing between the walls thereof and the cylinder headand adapted to have valve controlled communication with the cylinder,and a water jacket in the housing surrounding the cylinder and theintake and exhaust chambers.

S. In an engine. the combination of a. stationary housing. having aplurality of cytherein. pistons operating in the cylinders, a rotatablevalve iournaled in the liouslng and cooperating with 'alve-seats in the.heads of the cylinders. and rigid means for maintaining said cylindersini'equired re lationship with the housing.

9. In an engine. the combination of a stationary housing. having aplurality of cylindrical recesses. cylinders movably fitted therein.pistons operating in the cylinders. a

rotatable valve journaled in the housing and cooperating with valveseats in the heads of the cylinders. and rigid means operatingindependently with respect. to each cylinder for maintaining saidcylinders in required relationship with the liousin HENRY I. T. VANKEUREN \V i tnesscs MAE I'IUFMANN, JNO. P. (no.ssnahn.

